StealthXStream is one of the good lines by ocz. It was discontinued I believe.
You can take a look at ModXStream Pro,and I believe Antec TruePower New costs abit more and is seasonic made.
The first ModXstream, StealthXtream PSUs released by OCZ were the most garbage ones out there, not rated for it's labeled wattage and were causing a lot of disorders as reviewed by Hardwaresecrets.com.
Right now the ModXStream Pro is okay by most of the reviewers, no problem with it.